Weegy: Tile drainage is a best management practice. [ It reduces soil erosion and assists in the reduction of phosphorus in streams.
Well-drained soils carry more livestock per acre with less damage to the soil compared to poorly drained soil.
For hay, corn,soybeans and pasture expect about over a 30% increase in yield.
Tile drained soils create uniform field conditions for early field work.
Tile drained soils are essential for no-till agriculture on any soil type.
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Weegy: 1) The earth's atmosphere consists of 78 percent nitrogen and is the ultimate source of nitrogen. In most areas of the world, the nitrogen found in soil minerals is negligible. [ Nitrogen may be added to or lost from soil by a number of processes (see Figure 1). In the soil, nitrogen can undergo a number of transformations.
2)Rainfall adds about 10 pounds of nitrogen to the soil per acre per year. The nitrogen oxides and ammonium that are washed to earth are formed during electrical storms, by internal combustion engines and through oxidation by sunlight. Some scientists also believe that some of the gaseous products that result from the transformation of nitrogen fertilizers may cause a depletion of the ozone (O3) layer around the earth. The extent of this possible damage has not been substantiated. ] (More)